Oval basin



FIG. 1 is a top perspective view of an oval basin;

FIG. 2 is a front elevation view thereof, the rear elevation view being a mirror image thereof;

FIG. 3 is a right elevation view thereof, the left elevation view being a mirror image thereof;

FIG. 4 is a top plan view thereof; and,

FIG. 5 is a bottom plan view thereof. 

CLAIM The ornamental design for an oval basin, as shown and described. 